Calling for a "comprehensive investigation" into the case so that "unvarnished truth" comes out, he said he will continue to extend full cooperation to the police.

"I am stunned to hear that the Delhi Police have filed a case of murder against unknown persons in the demise of my late wife Sunanda. Needless to say I am anxious to see this case is investigated thoroughly and continue to assure the police of my full co-operation," Tharoor said in a statement.

MUST READ: Shashi Tharoor 'stunned' that Pushkar was poisoned

The former Union Minister also requested the police for copies of the postmortem and CFSL reports, saying that he had not been given these till date.

"We have not been provided with copies of the postmortem report and other reports of the inquiry like the CFSL report till date. We repeat our request for a copy of these reports to be provided to us immediately," he said.

READ: Sunanda case: Laptop, 3 mobile phones sent for forensic probe

Delhi Police on Tuesday registered a case of murder after a medical report said that Sunanda Pushkar's death was unnatural and was caused due to poisoning but nobody has been named as a suspect as yet.

Tharoor asked the police for "full information" on the basis of which the case was filed.

READ MORE: Sunanda Pushkar's son wants speedy end to inquiry into her death

"Although we never thought of any foul play in the death of my wife, we all want that a comprehensive investigation be conducted and that the unvarnished truth should come out.     

"In the meantime I join all members of Sunanda's family in asking for full information about the basis on which the police have come to this conclusion," the Congress leader said.

ALSO READ: Report about Sunanda's death inconclusive: Police

51-year-old Sunanda was found dead in a luxury hotel here on January 17, last year.

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